Lesson 2.5: Infection Control Flashcards
A technique to prevent disease-producing microorganisms from spreading
Aseptic Technique
The use of rubber, plastic, foil. or other fluid-resistant materials to cover surfaces and protect from contamination
Barrier Technique
Present in human blood and are disease-causing microorganisms
Examples: Bacteria, Viruses, Protozoa, and Fungi
Bloodborne Pathogen
The presence or expected presence of potentially infectious material
Contaminated
OPIM stands for
Other Potentially Infectious Material
PPE stands for
Personal Protective Equipment
OSHA stands for
Occupational Safety and Health Administration
The department that sets forth the specific requirements that are believed to prevent the transmission of bloodborne infectious material or OPIM to employees
OSHA
Singe-celled tiny organisms only seen with a microscope
Microorganisms
Microorganisms consist of how many major organism groups
Five
An organism that transmits a pathogen
Vector
Capable of producing disease in a host
Infectious Microorganism
Liquid or semi-liquid blood or OPIM
Infectious Waste
Contaminated sharps, saliva, extracted teeth, and blood-soaked gauze are examples of this
Infectious Waste
Infection acquired in a healthcare facility, such as Methicillin-resistant Staphylococcus Aureus (MRSA) or mycobacterium tuberculosis
Nosocomial Infection
The three types of classifications in Spaulding’s Classification
- Critical
- Semi-critical
- Noncritical
Examples of Critical Items in Spaulding’s Classifications
Surgical instruments, periodontal knives, suture, and needles that penetrate skin, mucous membranes, and bone.
TRUE OR FALSE:
Critical Items in Spaulding’s Classifications MUST be sterilized
True
Examples of Semi-critical Items in Spaulding’s Classifications
Radiographic positioning devices and plastic impression trays, which contact mucous membranes
TRUE OR FALSE:
Semi-critical Items in Spaulding’s Classifications REQUIRE high-level disinfection AND MUST be sterilized
False
High-level disinfection is required but CAN be sterilized
Examples of Noncritical Items in Spaulding’s Classifications
Dental unit, chair, and working surfaces, that have no penetration or contact with mucous membranes, but are exposed to splatter, sprays, splashing, blood and contaminated hands.
TRUE OR FALSE:
Noncritical Items in Spaulding’s Classifications REQUIRE high-level disinfection
False:
Intermediate-level disinfection is required
Any surgical entry into tissues, cavities, and organs. Causes manipulation, cutting, or removal of any oral or perioral tissue
Invasive Procedures
Exposure from blood or OPIM
Exposure Incident
Despite PPE, exposure of skin, eye, mucous membrane, or parenteral exposure to blood or OPIM resulting from performing duties
Occupational Exposure
Inflammation of the liver
Hepatitis
Symptoms of Hepatitis
- Loss of appetite
- Nausea
- Vomiting
- Jaundice
- Fever
The three major types of Hepatitis
- Hepatitis A (HAV)
- Hepatitis B (HBV)
- Hepatitis C (HCV)
Type of Hepatitis with the highest rate of transmission
Hepatitis B
Type of Hepatitis most commonly acquired through contaminated food and water
Hepatitis A
TRUE OR FALSE:
Hepatitis A has a vaccination
True
Type of Hepatitis transmitted by body fluids, saliva, needle use, and sexual contact; may also result in prolonged illness, the destruction of liver cells and death
Hepatitis B
TRUE OR FALSE:
Hepatitis B does NOT have a vaccination
False
Similar to Hepatitis B and can also be transmitted through body fluids, saliva, needles, and sex
Hepatitis C
TRUE OR FALSE:
Hepatitis C has a vaccination
False
TRUE OR FALSE:
HBV vaccination is required for dental personnel
True
This infection primarily involves bacteria attacking the lungs by inhalation of highly infectious droplets, which are aerosolized by coughing
Tuberculosis (TB)
This infection is the leading cause of death from infectious diseases worldwide
Tuberculosis (TB)
A condition that destroys the body’s immune system, making the individual susceptible to life-threating opportunistic infections such as tuberculosis or cancers
Human Immunodeficiency Virus (HIV)
Where vector lives or reproduces
Susceptible Host/Reservoir
Four categories of Susceptible Host/Reservoir
- Living Body
- Body of Water
- Surface
- Food
Ways in which microorganisms leave the body to cause infection
Portal of Exit
The five Modes of Transmission
- Direct (the first possible method of transmission)
- Indirect
- Splash/spatter
- Airborne
- Parental (puncture or skin tear)
Mode of Transmission: A direct person to person contact with mucous membranes and/or non-intact skin; common mode for sexually transmitted diseases
Direct
Mode of Transmission: Contact with contaminated instruments, equipment, and environmental surfaces (i.e. dirty countertops)
Indirect
Mode of Transmission: Contact with blood, saliva or other body fluids onto unbroken or non-intact skin/mucosa
Splash/splatter
Mode of Transmission: Microorganisms that are suspended in air, or carried through air and ventilation systems, or contact with aerosols containing saliva, blood, and microorganisms created by use of high-speed handpiece or air/water syringe
Airborne
Mode of Transmission: Needle sticks, human bites, cuts, abrasions or any break in the skin
Parental (puncture or skin tear)
The means of entering host/reservoir
Portal of Entry
This is capable of causing disease
Pathogenic microorganisms
Three factors that influence a pathogen’s capability
- Host Resistance
- Virulence
- Concentration
The ability of the body to resist the pathogen
Host Resistance
The ability of the pathogen to overcome the body’s defense and cause disease
Virulence
The amount of viruses present
Concentration
TRUE OR FALSE:
Healthier human hosts may be more resistant to a particular viral infection
True
A group of one-celled microorganisms enclosed by a cell wall
Bacteria
Classification: Bacteria that require oxygen to grow
Aerobes
Classification: Bacteria that are destroyed by oxygen and will only grow in its absence
Anaerobes
Classification: Bacteria that can grow in either the presence or absence of oxygen
Facultative anaerobes
Classification: Bacteria that may prevent antibiotics from working and are generally virulent (capable of causing serious disease)
Capsules
Microorganisms that are much smaller than bacteria and cannot live long or reproduce outside the living host
Viruses
Microorganisms that invade the host cell, replicate, and then destroy the host cell, which releases more of itself into the body
Viruses
Single-celled animals that can survive freely in nature and are spread by a carrier
Protozoa
This type of microorganism is mostly harmless and lives on dead organic matter or bacteria
Protozoa
Free-living microorganisms that lack chlorophyll. They are smaller than protozoa
Fungi
The humans’ built-in disease-fighting mechanism
Disease Immunity
Two types of Disease Immunities
- Inherited
2. Acquired
Two types of Acquired Immunities
- Natural
2. Artificial
Type of Disease Immunity:
When antibodies are formed while fighting against active pathogens
Naturally Acquired
Type of Disease Immunity:
When weakened disease-causing organisms are injected into the body, which causes antibodies to pathogens to build up in the body
Artificially Acquired
To treat all blood and OPIM as infected with bloodborne pathogens and decrease infection transmission through engineering and workplace controls
(Standard) Universal Precautions
Equipment or materials that isolate to prevent exposures
Engineering Controls
Removing sharps prior to pre-cleaning DTR, directing patient to swish antibacterial mouthwash prior to procedures, and proper handwashing are examples of
Workplace Controls
Method of cleaning and disinfecting DTR
Spray-Wipe-Spray
Free from all living microorganisms
Sterile
The process that destroys all microorganisms
Sterilization
Required when preparing for patient treatment, during treatment, and after patient dismissal
Aseptic Techniques
Steps to report exposure to contaminated sharps
- Stop procedures and step out immediately
- Milk and wash site
- Report to your supervisor
Derives from retraction of contaminated water and saliva through dental handpiece or three-way syringe or bacterial growth in water lines where stagnant water loses chlorine potency and bacteria may multiply and become pathogenic
Water’s Microbial Contamination